* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #f7f8fa;
    color: #1f2937;
    font-family:
        Inter,
        Arial,
        sans-serif;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
}

.nav {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    font-weight: 800;
    font-size: 24px;
    text-decoration: none;
    color: #111827;
}

.nav-link {
    color: #4b5563;
    text-decoration: none;
}

.breadcrumb {
    padding: 24px 0 8px;
}

.breadcrumb a {
    color: #4f46e5;
    text-decoration: none;
}

.product-card {
    margin: 24px 0 40px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 18px;
    overflow: hidden;
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        minmax(0, 1fr);
}

.product-image-wrap {
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    background: #fafafa;
}

.product-image {
    max-width: 100%;
    max-height: 440px;
    object-fit: contain;
}

.product-info {
    padding: 48px;
}

.eyebrow {
    color: #6b7280;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

h1 {
    margin: 0;
    font-size: 36px;
    line-height: 1.15;
    color: #111827;
}

.price {
    font-size: 30px;
    font-weight: 800;
    margin-top: 28px;
    color: #111827;
}

.availability {
    margin-top: 10px;
    color: #15803d;
    font-weight: 600;
}

.description {
    margin-top: 28px;
    line-height: 1.7;
    color: #4b5563;
}

.meta {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid #e5e7eb;
    font-size: 14px;
    color: #6b7280;
}

.meta div {
    margin-bottom: 8px;
}

.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 30px;
    min-height: 52px;
    padding: 0 26px;
    border-radius: 10px;
    background: #111827;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    border: 0;
    cursor: pointer;
}

.cta:hover {
    opacity: 0.9;
}

.cta.disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.disclosure {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    padding: 22px;
    line-height: 1.6;
    color: #6b7280;
    margin-bottom: 40px;
    font-size: 14px;
}

footer {
    color: #6b7280;
    font-size: 14px;
    padding: 30px 0 50px;
}

@media (max-width: 800px) {
    .product-card {
        grid-template-columns: 1fr;
    }

    .product-image-wrap {
        min-height: 360px;
        padding: 28px;
    }

    .product-info {
        padding: 28px;
    }

    h1 {
        font-size: 28px;
    }
}